The wheat midge insects have the characteristics of strong concealment and great harm. Prevention and control should be based on the prevention and control of the mid-suicide period, and the prevention and treatment of swamp-to-paving in the adult stage. We must seize the key period of scientific prevention. I. Prevention and treatment in the flood season With the increase of temperature, the overwintering mites gradually move upwards. Before the heading date of wheat is 3-5 days (middle flood season), it is estimated that the city will migrate to the surface on April 21-27. This is the best time for prevention and control in the flood season. Can use 48% chlorpyrifos EC 200-250 ml water 2 kg, or 3% methyl isofluosal powder 2 kg, or 5% chlorpyrifos powder 0.6---0.9 kg, mixed fine (sand) soil 20-- - 25 kg of dubbed poisonous (sand) soil. Shunmai ridge evenly spreads the ground surface. Watering the poisonous soil in time can improve the efficacy. The pesticide should be applied when there is no dew in the field after 10:00am. The poisonous soil sticking to the wheat leaf should be timely cleaned with broomsticks, branches, etc. on the ground. Second, adult control When the heading rate of wheat reaches 70-80% (the period of adult emergence), the overwintering pupa emerges into adults. This is the best time to control adult worms. It is expected that the city will be able to immediately begin on May 1-9. Medication prevention. Mu with 4.5% beta cypermethrin EC 50 ml + 20% imidacloprid powder 20 g, or 25% Dimethavalon Emulsion, or 40% Chlorpyrifos EC 50 ml + 4.5% Beta Cypermethrin EC 30 ml, both diluted 30 kg Spray evenly at 7-10 am or 4-7 pm. Depending on the severity, spray again every 4 - 7 days. In the prevention and treatment, the whole wheat plant is required to be treated with drugs, and at the same time, it can simultaneously treat wheat aphids and other pests.
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Wheat Midge Control Technology